Monthly Archives: February 2009

I’m assuming you are quite familiar with tally marks: As a system of representation of quantity, tally marks play a very interesting role. You can view it as a number system, yet as a number system it does not compete … Continue reading →

This is a puzzle. In prior posts, I used the Collatz Problem, restated here: Each counting number n past 1 is assigned a successor number, as follows: The number “1″ is considered home, and when you’re home, you stop. If … Continue reading →

This post is a follow-up on an earlier post in which I introduced the Collatz Problem and designed a sieve that systematically builds solutions and is very efficient in the work it does. In this post, I’ll give a version … Continue reading →

I think I overlooked one interesting example of something like a sieve being used in the typical K-12 math curriculum, and this post is intended to remedy that. It is possible and instructive to look at a histogram as a … Continue reading →

Today, there is a follow-up on yesterday’s Non Sequitur comic – in which Danae’s new math system is revealed: henceforth, she will start with the answer and work back to get an equation that fits the problem. This way, she … Continue reading →

In today’s comics, there is this Non Sequitur one: Comics, to me, are interesting regardless of whether a particular one is funny, since they reveal a lot about the community and the society in which they appear. Usually, comics make … Continue reading →

This post is meant as a follow-up on this one on look-up and sieves, not on my more recent one pondering the diminished status of look-up in K-12 math. I’ve been playing with different ways to use a sieve to … Continue reading →